Personally I think the nicknames Barbecued Brutus, Agent Orange, Trumplethinskin, Dubious Caesar, Orange Caligula, or Fuckface von Clownstick are are more fitting than Drumpf, which rolls off the tongue weird.

Pretty sure that courts have decided if you are using your personal accounts to conduct government business, you aren't allowed to ban/block constituents. And Trump uses his personal account for government business.